var obj={"0":[{"name":"a"}],"1":[{"name":"a1"}],"2":[{"name":"a2"}]}; console.log(Object.keys(obj)); Object.keys(obj).forEach(function(key,item){ console.log(key); console.log(item); console.log(obj[key]); console.log(obj[key][0].name); });
也可以这样遍历
for( e in obj){ console.log(obj[e][0].name); }
原文：https://www.cnblogs.com/Tpf386/p/11535708.html